The act of reasoning earnestly in order to dissuade or remonstrate.(noun)
A comment of earnest reasoning meant to dissuade or remonstrate.(noun)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "expostulation" in a sentence
"The amount of anticipatory glee I have while awaiting a Biden expostulation is no doubt directly proportional to the angst Obama feels with the same anticipation."
"One was whipped deftly on to his plate, and as he took up his knife and fork to carve it, a great scuffling sounded without, angry voices being raised in expostulation, and, above all, a breathless, insistent appeal for Mr. Carr or Sir Miles."
"Well, Daddy! said Norah in expostulation – whereat everybody laughed."